TB9.2 Example Applications: examples/S60CppExamples/ClientServerAsync/doc/timeserversession

00001 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
00002 <html>
00003 
00004 <head>
00005 <meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
00006 <title>timeserversession.cpp Source File</title>
00007 <link href="style.css" rel="stylesheet" type="text/css">
00008 </head>
00009 
00010 <table border="0" width="100%" height="8" bgcolor="#eeeeee">
00011 <tr> <td width="100%" height="1"><b><font size="2" color="#000000" face="Arial, Helvetica, sans-serif"><strong><a name=Top></a>
00012 S60 5th Edition SDK </strong></font></b><br><i>Example Applications Guide</i></td></tr> </table>
00013 <!-- Generated by Doxygen 1.4.5 -->
00014 <div class="tabs">
00015   <ul>
00016     <li><a href="index.html"><span>Main&nbsp;Page</span></a></li>
00017     <li><a href="annotated.html"><span>Classes</span></a></li>
00018     <li id="current"><a href="files.html"><span>Files</span></a></li>
00019   </ul></div>
00020 <h1>timeserversession.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
00021 <a name="l00002"></a>00002 <span class="comment">* ==============================================================================</span>
00022 <a name="l00003"></a>00003 <span class="comment">*  Name        : timeserversession.cpp</span>
00023 <a name="l00004"></a>00004 <span class="comment">*  Part of     : CSAsync</span>
00024 <a name="l00005"></a>00005 <span class="comment">*  Interface   :</span>
00025 <a name="l00006"></a>00006 <span class="comment">*  Description :</span>
00026 <a name="l00007"></a>00007 <span class="comment">*  Version     :</span>
00027 <a name="l00008"></a>00008 <span class="comment">*</span>
00028 <a name="l00009"></a>00009 <span class="comment">*  Copyright (c) 2004-2006 Nokia Corporation.</span>
00029 <a name="l00010"></a>00010 <span class="comment">*  This material, including documentation and any related</span>
00030 <a name="l00011"></a>00011 <span class="comment">*  computer programs, is protected by copyright controlled by</span>
00031 <a name="l00012"></a>00012 <span class="comment">*  Nokia Corporation.</span>
00032 <a name="l00013"></a>00013 <span class="comment">* ==============================================================================</span>
00033 <a name="l00014"></a>00014 <span class="comment">*/</span>
00034 <a name="l00015"></a>00015 
00035 <a name="l00016"></a>00016 
00036 <a name="l00017"></a>00017 <span class="comment">// INCLUDE FILES</span>
00037 <a name="l00018"></a>00018 <span class="preprocessor">#include &lt;e32math.h&gt;</span>
00038 <a name="l00019"></a>00019 
00039 <a name="l00020"></a>00020 <span class="preprocessor">#include "ClientServerCommon.h"</span>
00040 <a name="l00021"></a>00021 <span class="preprocessor">#include "TimeServerSession.h"</span>
00041 <a name="l00022"></a>00022 
00042 <a name="l00023"></a>00023 <span class="comment">// FUNCTION PROTOTYPES</span>
00043 <a name="l00024"></a>00024 <span class="keyword">static</span> TInt StartServer();
00044 <a name="l00025"></a>00025 <span class="keyword">static</span> TInt CreateServerProcess();
00045 <a name="l00026"></a>00026 
00046 <a name="l00027"></a>00027 <span class="comment">// ========================= MEMBER FUNCTIONS ==================================</span>
00047 <a name="l00028"></a>00028 
00048 <a name="l00029"></a>00029 <span class="comment">// -----------------------------------------------------------------------------</span>
00049 <a name="l00030"></a>00030 <span class="comment">// RTimeServerSession::RTimeServerSession()</span>
00050 <a name="l00031"></a>00031 <span class="comment">// C++ default constructor can NOT contain any code, that might leave.</span>
00051 <a name="l00032"></a>00032 <span class="comment">// -----------------------------------------------------------------------------</span>
00052 <a name="l00033"></a>00033 <span class="comment">//</span>
00053 <a name="l00034"></a><a class="code" href="class_r_time_server_session.html#d8a4b16d15242f1f1a1e7e2585bf81a6">00034</a> <a class="code" href="class_r_time_server_session.html#d8a4b16d15242f1f1a1e7e2585bf81a6">RTimeServerSession::RTimeServerSession</a>()
00054 <a name="l00035"></a>00035 : RSessionBase(), iTimeBuffer( NULL, 0, 0 )
00055 <a name="l00036"></a>00036     {
00056 <a name="l00037"></a>00037     <span class="comment">// No implementation required</span>
00057 <a name="l00038"></a>00038     }
00058 <a name="l00039"></a>00039 
00059 <a name="l00040"></a>00040 <span class="comment">// -----------------------------------------------------------------------------</span>
00060 <a name="l00041"></a>00041 <span class="comment">// RTimeServerSession::Connect()</span>
00061 <a name="l00042"></a>00042 <span class="comment">// Connects to the server and create a session.</span>
00062 <a name="l00043"></a>00043 <span class="comment">// -----------------------------------------------------------------------------</span>
00063 <a name="l00044"></a>00044 <span class="comment">//</span>
00064 <a name="l00045"></a><a class="code" href="class_r_time_server_session.html#0a20867f2777f1db7349df290a5e6112">00045</a> TInt <a class="code" href="class_r_time_server_session.html#0a20867f2777f1db7349df290a5e6112">RTimeServerSession::Connect</a>()
00065 <a name="l00046"></a>00046     {
00066 <a name="l00047"></a>00047     TInt error = ::StartServer();
00067 <a name="l00048"></a>00048 
00068 <a name="l00049"></a>00049     <span class="keywordflow">if</span> ( KErrNone == error )
00069 <a name="l00050"></a>00050         {
00070 <a name="l00051"></a>00051         error = CreateSession( KTimeServerName,
00071 <a name="l00052"></a>00052                                <a class="code" href="class_r_time_server_session.html#30dc24843f42888ea13e6093f6318f37">Version</a>(),
00072 <a name="l00053"></a>00053                                KDefaultMessageSlots );
00073 <a name="l00054"></a>00054         }
00074 <a name="l00055"></a>00055     <span class="keywordflow">return</span> error;
00075 <a name="l00056"></a>00056     }
00076 <a name="l00057"></a>00057 
00077 <a name="l00058"></a>00058 <span class="comment">// -----------------------------------------------------------------------------</span>
00078 <a name="l00059"></a>00059 <span class="comment">// RTimeServerSession::Version()</span>
00079 <a name="l00060"></a>00060 <span class="comment">// Gets the version number.</span>
00080 <a name="l00061"></a>00061 <span class="comment">// -----------------------------------------------------------------------------</span>
00081 <a name="l00062"></a>00062 <span class="comment">//</span>
00082 <a name="l00063"></a><a class="code" href="class_r_time_server_session.html#30dc24843f42888ea13e6093f6318f37">00063</a> TVersion <a class="code" href="class_r_time_server_session.html#30dc24843f42888ea13e6093f6318f37">RTimeServerSession::Version</a>()<span class="keyword"> const</span>
00083 <a name="l00064"></a>00064 <span class="keyword">    </span>{
00084 <a name="l00065"></a>00065     <span class="keywordflow">return</span>( TVersion( KTimeServMajorVersionNumber,
00085 <a name="l00066"></a>00066                       KTimeServMinorVersionNumber,
00086 <a name="l00067"></a>00067                       KTimeServBuildVersionNumber ) );
00087 <a name="l00068"></a>00068     }
00088 <a name="l00069"></a>00069 
00089 <a name="l00070"></a>00070 <span class="comment">// -----------------------------------------------------------------------------</span>
00090 <a name="l00071"></a>00071 <span class="comment">// RTimeServerSession::RequestTime()</span>
00091 <a name="l00072"></a>00072 <span class="comment">// Issues a request for the time to the server.</span>
00092 <a name="l00073"></a>00073 <span class="comment">// -----------------------------------------------------------------------------</span>
00093 <a name="l00074"></a>00074 <span class="comment">//</span>
00094 <a name="l00075"></a><a class="code" href="class_r_time_server_session.html#0e65b7c45b7af042183f1c5525cfcc1b">00075</a> <span class="keywordtype">void</span> <a class="code" href="class_r_time_server_session.html#0e65b7c45b7af042183f1c5525cfcc1b">RTimeServerSession::RequestTime</a>( TTime&amp; aTime, TRequestStatus&amp; aStatus )
00095 <a name="l00076"></a>00076     {
00096 <a name="l00077"></a>00077     <a class="code" href="class_r_time_server_session.html#828f90acd9ecd7a6283a9226001e3921">iTimeBuffer</a>.Set( reinterpret_cast&lt;TUint8*&gt;( &amp;aTime ), <span class="keyword">sizeof</span>( aTime ),
00097 <a name="l00078"></a>00078                      <span class="keyword">sizeof</span>( aTime ) );
00098 <a name="l00079"></a>00079     
00099 <a name="l00080"></a>00080     <span class="comment">// Package message arguments before sending to the server</span>
00100 <a name="l00081"></a>00081     TIpcArgs args( &amp;<a class="code" href="class_r_time_server_session.html#828f90acd9ecd7a6283a9226001e3921">iTimeBuffer</a> );
00101 <a name="l00082"></a>00082     
00102 <a name="l00083"></a>00083     <span class="comment">// This call completes immediately, however the server will not</span>
00103 <a name="l00084"></a>00084     <span class="comment">// complete the request until later, so don't pass any local</span>
00104 <a name="l00085"></a>00085     <span class="comment">// descriptors as they will be out of scope by the time the server</span>
00105 <a name="l00086"></a>00086     <span class="comment">// attempts to write to them</span>
00106 <a name="l00087"></a>00087     SendReceive( ETimeServRequestTime, args, aStatus );
00107 <a name="l00088"></a>00088     }
00108 <a name="l00089"></a>00089 
00109 <a name="l00090"></a>00090 <span class="comment">// -----------------------------------------------------------------------------</span>
00110 <a name="l00091"></a>00091 <span class="comment">// RTimeServerSession::CancelRequestTime()</span>
00111 <a name="l00092"></a>00092 <span class="comment">// Cancels any outstanding request to the server.</span>
00112 <a name="l00093"></a>00093 <span class="comment">// -----------------------------------------------------------------------------</span>
00113 <a name="l00094"></a><a class="code" href="class_r_time_server_session.html#52a5f2cddd36f215fea9c11e32ab88b8">00094</a> <span class="keywordtype">void</span> <a class="code" href="class_r_time_server_session.html#52a5f2cddd36f215fea9c11e32ab88b8">RTimeServerSession::CancelRequestTime</a>()<span class="keyword"> const</span>
00114 <a name="l00095"></a>00095 <span class="keyword">    </span>{
00115 <a name="l00096"></a>00096     SendReceive( ETimeServCancelRequestTime, TIpcArgs(NULL) );
00116 <a name="l00097"></a>00097     }
00117 <a name="l00098"></a>00098 
00118 <a name="l00099"></a>00099 <span class="comment">// ============================= OTHER FUNCTIONS ===============================</span>
00119 <a name="l00100"></a>00100 
00120 <a name="l00101"></a>00101 <span class="comment">// -----------------------------------------------------------------------------</span>
00121 <a name="l00102"></a>00102 <span class="comment">// StartServer()</span>
00122 <a name="l00103"></a>00103 <span class="comment">// Starts the server if it is not already running</span>
00123 <a name="l00104"></a>00104 <span class="comment">// -----------------------------------------------------------------------------</span>
00124 <a name="l00105"></a>00105 <span class="comment">//</span>
00125 <a name="l00106"></a>00106 <span class="keyword">static</span> TInt StartServer()
00126 <a name="l00107"></a>00107     {
00127 <a name="l00108"></a>00108     TInt result;
00128 <a name="l00109"></a>00109 
00129 <a name="l00110"></a>00110     TFindServer findTimeServer( KTimeServerName );
00130 <a name="l00111"></a>00111     TFullName name;
00131 <a name="l00112"></a>00112 
00132 <a name="l00113"></a>00113     result = findTimeServer.Next( name );
00133 <a name="l00114"></a>00114     <span class="keywordflow">if</span> ( result == KErrNone )
00134 <a name="l00115"></a>00115         {
00135 <a name="l00116"></a>00116         <span class="comment">// Server already running</span>
00136 <a name="l00117"></a>00117         <span class="keywordflow">return</span> KErrNone;
00137 <a name="l00118"></a>00118         }
00138 <a name="l00119"></a>00119 
00139 <a name="l00120"></a>00120     RSemaphore semaphore;
00140 <a name="l00121"></a>00121     result = semaphore.CreateGlobal( KTimeServerSemaphoreName, 0 );
00141 <a name="l00122"></a>00122     <span class="keywordflow">if</span> ( result != KErrNone )
00142 <a name="l00123"></a>00123         {
00143 <a name="l00124"></a>00124         <span class="keywordflow">return</span>  result;
00144 <a name="l00125"></a>00125         }
00145 <a name="l00126"></a>00126 
00146 <a name="l00127"></a>00127     result = CreateServerProcess();
00147 <a name="l00128"></a>00128     <span class="keywordflow">if</span> ( result != KErrNone )
00148 <a name="l00129"></a>00129         {
00149 <a name="l00130"></a>00130         <span class="keywordflow">return</span>  result;
00150 <a name="l00131"></a>00131         }
00151 <a name="l00132"></a>00132 
00152 <a name="l00133"></a>00133     semaphore.Wait();
00153 <a name="l00134"></a>00134     semaphore.Close();
00154 <a name="l00135"></a>00135 
00155 <a name="l00136"></a>00136     <span class="keywordflow">return</span> KErrNone;
00156 <a name="l00137"></a>00137     }
00157 <a name="l00138"></a>00138 
00158 <a name="l00139"></a>00139 <span class="comment">// -----------------------------------------------------------------------------</span>
00159 <a name="l00140"></a>00140 <span class="comment">// CreateServerProcess()</span>
00160 <a name="l00141"></a>00141 <span class="comment">// Creates a server process</span>
00161 <a name="l00142"></a>00142 <span class="comment">// -----------------------------------------------------------------------------</span>
00162 <a name="l00143"></a>00143 <span class="comment">//</span>
00163 <a name="l00144"></a>00144 <span class="keyword">static</span> TInt CreateServerProcess()
00164 <a name="l00145"></a>00145     {
00165 <a name="l00146"></a>00146     TInt result;
00166 <a name="l00147"></a>00147 
00167 <a name="l00148"></a>00148     <span class="keyword">const</span> TUidType serverUid( KNullUid, KNullUid, KServerUid3 );
00168 <a name="l00149"></a>00149 
00169 <a name="l00150"></a>00150     RProcess server;
00170 <a name="l00151"></a>00151 
00171 <a name="l00152"></a>00152     result = server.Create( KTimeServerFilename, KNullDesC, serverUid );
00172 <a name="l00153"></a>00153 
00173 <a name="l00154"></a>00154     <span class="keywordflow">if</span> ( result != KErrNone )
00174 <a name="l00155"></a>00155         {
00175 <a name="l00156"></a>00156         <span class="keywordflow">return</span>  result;
00176 <a name="l00157"></a>00157         }
00177 <a name="l00158"></a>00158 
00178 <a name="l00159"></a>00159     server.Resume();
00179 <a name="l00160"></a>00160     server.Close();
00180 <a name="l00161"></a>00161 
00181 <a name="l00162"></a>00162     <span class="keywordflow">return</span>  KErrNone;
00182 <a name="l00163"></a>00163     }
00183 <a name="l00164"></a>00164 
00184 <a name="l00165"></a>00165 
00185 <a name="l00166"></a>00166 <span class="comment">// End of File</span>
00186 </pre></div><hr>
00187 
00188 <table x-use-null-cells
00189                 style="x-cell-content-align: top;
00190                                 width: 100%;
00191                                 border-spacing: 0px;
00192                                 border-spacing: 0px;"
00193                 cellspacing=0
00194                 width=100%>
00195   <col style="width: 50%;">
00196   <col style="width: 50%;">
00197 
00198   <tr style="x-cell-content-align: top;"
00199         valign=top>
00200   <td style="width: 50%;
00201                         padding-right: 10px;
00202                         padding-left: 10px;
00203                         border-right-style: None;
00204                         border-left-style: None;
00205                         border-top-style: None;
00206                         border-bottom-style: None;"
00207         width=50%>
00208   <p style="font-family: Arial;"><small style="font-size: smaller;">� Nokia 2009</small></td>
00209   <td style="width: 50%;
00210                         padding-right: 10px;
00211                         padding-left: 10px;
00212                         border-top-style: None;
00213                         border-bottom-style: None;
00214                         border-right-style: None;"
00215         width=50%>
00216   <p style="text-align: right; margin-right: -4px;"
00217         align=right><span style="font-weight: bold;"><a href="#Top"
00218                                                                                                         title="Back to top"><img
00219  src="top.gif"
00220         x-maintain-ratio=TRUE
00221         alt="Back to top"
00222         style="border: none;
00223                         width: 18px;
00224                         height: 15px;
00225                         float: none;
00226                         border-style: none;
00227                         border-style: none;"
00228         width=18
00229         height=15
00230         border=0></a></span></td></tr>
00231  </table>
00232 </body>
00233 </html>
00234
examples/S60CppExamples/ClientServerAsync/doc/timeserversession_8cpp-source.html
